and selenium determination in food
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and selenium determination in food.

AND SELENIUM DETERMINATION IN FOOD - Srce

food of plant origin, which in turn requires sensitive and accurate methods for their determination. Numerous techniques have been developed for determination of low mercury and selenium levels in food and environmental samples (8, 9). However, only neutron activation analysis and, additionally, fluorometry for selenium meet the re-

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Determination of selenium in food and environmental ...

2020-12-1  Selenium-enriched agricultural food have attracted tremendous attention because selenium acts as an essential micronutrient for humans (Peng and Wang, 2019). The ingestion of selenium from food and environment is a major way of having selenium level in the human body because few organs can store selenium for a long time.

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Determination of selenium in food and environmental ...

Selenium is one of the most attractive nutrient elements for antioxidant, anticancer and immunomodulatory effects, which is obtained from the agricultural food and environment. Herein, a gold nanocages/fluorinated graphene (AuNCs/FG) nanocomposite modified glassy carbon electrode (GCE) was fabricated for the electrochemical determination of ...

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Determination of Selenium in Food Samples by High ...

2018-8-17  In this study, a preconcentration procedure was developed for the determination of selenium in food samples using high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS). Halloysite nanotubes (HNTs) were used as a solid sorbent in ultrasound-assisted dispersive micro solid-phase extraction (USA DMSPE) during the preconcentration step. The

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Determination of selenium in selected food samples from ...

2012-10-15  In the present work, a suitable FI-HGAAS method was optimised and applied to the determination of selenium in selected food from Argentinean diet (different meat, milk and cereal based samples) using a wet digestion pre-treatment. The developed methodology provides a very good performance for the various matrices studied using an aqueous ...

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Selenium species determination in foods harvested in ...

Selenium species determination in foods harvested in Seleniferous soils by HPLC-ICP-MS after enzymatic hydrolysis assisted by pressurization and microwave energy Food Res Int . 2018 Sep;111:621-630. doi: 10.1016/j.foodres.2018.06.003.

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Determination of Selenium, Chromium and Copper in

The determination of selenium, chromium and copper in food dyes by graphite furnace atomic absorption spectrometry was carried out using a simple acid dissolution as

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(PDF) Certified reference materials for quality control of ...

mercury and selenium determination in food using CRMs as is the condition of ana- lytical instruments, since both steps may bring losses and contamination (5, 8–10).

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Speciation and determination of inorganic selenium

Speciation and determination of selenium species in certain food and fish samples. • First application of proposed modified and developed AAS method. • High sensitivity and selectivity, simple, robust and low-cost method. • With using gold coated W-coil trap, effect of interfering elements reduced or eliminated. • SEM-EDX analysis. •

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Analytical Methods of Selenium Determination SpringerLink

Selenium occurs naturally in biological materials that vary from a few parts per billion to a few per cent. Methods for its determination, therefore, cover a wide range of

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Determination of total selenium in food samples by d-CPE ...

2017-7-15  The extract obtained by d-CPE could be measured directly by HG-AFS. Additionally, RSM was useful for optimization of the experimental factors, and was used to evaluate interactions between multiple variables. The proposed method was successfully applied to the determination of selenium content in twelve food samples.

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(PDF) Determination of Arsenic and Selenium in Food

Precise determination of selenium content in the food is quite important because there is a narrow margin of safety between adequate amount and overconsumption.

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Determination of selenium in food and environmental ...

The paper presents a method for Se determination in a wide variety of food and environmental samples by hydride generation high-resolution continuum source quartz furnace atomic absorption spectrometry. The method was found to be free from spectral interference caused by

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Determination of selenium in food matrices by replicate ...

2009-6-18  The low selenium concentration in many food matrices, losses through volatilization during sample decomposition, and the complex composition of food samples are responsible for the difficulty of selenium determination [].Neutron activation analysis (NAA) with short-lived nuclides has a great potential for the determination of a number of elements in a variety of matrices.

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Selenium species determination in foods harvested in ...

Selenium species determination in foods harvested in Seleniferous soils by HPLC-ICP-MS after enzymatic hydrolysis assisted by pressurization and microwave energy Food Res Int . 2018 Sep;111:621-630. doi: 10.1016/j.foodres.2018.06.003.

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Determination of total selenium in food samples by d-CPE ...

A dual-cloud point extraction (d-CPE) procedure was developed for the simultaneous preconcentration and determination of trace level Se in food samples by hydride generation-atomic fluorescence spectrometry (HG-AFS). The Se(IV) was complexed with ammonium pyrrolidinedithiocarbamate (APDC) in

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Determination of Selenium, Chromium and Copper in

The determination of selenium, chromium and copper in food dyes by graphite furnace atomic absorption spectrometry was carried out using a simple acid dissolution as sample treatment.

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Determination of mercury and selenium in consumed food ...

Examples are the determination of iodine in Asian diets by ENAA and RNAA [62], the determination of mercury and selenium in food items consumed in Libya using INAA and RNAA [74] and two Portuguese ...

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Selenium Species Determination in Se-Enriched Grain

2021-2-5  Selenium (Se) plays an important role in enzyme glutathione peroxidase, such as endocrine modulation, cancer prevention, inhibition of the toxicity of heavy metals, and the protection of nerves, blood vessel, liver, skeletal, and cardiac muscles (Gladyshev and Hatfield 1999; Ju et al. 2017; Gopalakrishna et al. 2018).Se deficiency in the human body is associated with Kashan, Kashin-Beck ...

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Spectrophotometric Determination of Selenium Using ...

This study describes a rapid and sensitive spectrophotometric method for the determination of trace amounts of selenium, using starch and iodine as chromogenic reagents. The proposed method is based on the reaction of selenium with potassium iodide in an acidic medium to liberate iodine. This reacts with starch to form a blue colored species with an absorption maximum of 570 nm. Beer’s Law ...

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Selenium species determination in foods harvested in ...

Selenium species determination in foods harvested in Seleniferous soils by HPLC-ICP-MS after enzymatic hydrolysis assisted by pressurization and microwave energy Food Res Int . 2018 Sep;111:621-630. doi: 10.1016/j.foodres.2018.06.003.

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Determination of selenium in food and environmental ...

The paper presents a method for Se determination in a wide variety of food and environmental samples by hydride generation high-resolution continuum source quartz furnace atomic absorption spectrometry. The method was found to be free from spectral interference caused by

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(PDF) Determination of Arsenic and Selenium in Food

Precise determination of selenium content in the food is quite important because there is a narrow margin of safety between adequate amount and overconsumption.

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Determination of selenium in food supplements by ...

Selenium was determined by cathodic stripping voltammetry in a 1 mol l-1 HCl acid solution containing added CuII. In this medium, selenium was preconcentrated on the hanging mercury drop electrode and stripped cathodically in differential-pulse mode. After a deposition period of 1 min, 0.2 ng ml-1 o

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Determination of total selenium in food samples by d-CPE ...

A dual-cloud point extraction (d-CPE) procedure was developed for the simultaneous preconcentration and determination of trace level Se in food samples by hydride generation-atomic fluorescence spectrometry (HG-AFS). The Se(IV) was complexed with ammonium pyrrolidinedithiocarbamate (APDC) in

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Determination of selenium compounds in food

The ultrasonic-assisted extraction (UAE) procedure was developed for the determination of inorganic arsenic and selenium in foods by hydride-generation atomic absorption spectrometry (HG-AAS) and was shown to be rapid and sensitive, with good results for extraction, pre-concentration and determination of total As and Se contents from food samples.

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Determination of selenium in food and environmental

2020-12-1  Determination of selenium in food and environmental samples using a gold nanocages/fluorinated graphene nanocomposite modified electrode Journal of Food Composition and Analysis ( IF 4.556) Pub Date : 2020-12-01, DOI: 10.1016/j.jfca.2020.103628

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Accurate determination of arsenic and selenium in plant ...

Arsenic (As) and selenium (Se) in food have caused public concern. Determination of As and Se in plant food samples encounters mass spectral interferences. The influence of polyatomic and doubly charged ions on the determination was evaluated by

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Spectrophotometric Determination of Selenium in

The content of selenium in food depends on the selenium content of the soil where plants are grown or animals are raised In the present study, we are reporting rapid, simple, sensitive and selective methods for the determination of traces of selenium (IV) with DAUH, anew reagent

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Sequential determination of arsenic, selenium, antimony ...

2002-5-1  Determination of Arsenic and Selenium in Food using a Microwave Digestion–Dry Ash Preparation and Flow Injection Hydride Generation Atomic Absorption Spectrometry. Journal of Food Composition and Analysis 1999, 12 (2) , 111-122. DOI: 10.1006/jfca.1999.0814.

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